A search and rescue operation is underway for a man who went hiking but has not returned.

有个人徒步旅行，但是没有返回。目前已经展开搜救行动。

The search and rescue operation following the crash of an airplane has been completed.

飞机失事后的搜救行动已经结束。

Manpower and material resources are sent to the area hit by an earthquake to carry out the search and rescue operation.

人力和物力资源输送到地震灾区以展开搜救行动。

来源同文世纪翻译，转载请注明出处！